Method for producing a continuous bonding agent carpet and road finisher

Abstract

A road finisher F for producing a continuous sprayed carpet T of a bonding agent on a planum has a spraying system S on a vehicle having at least two spraying facilities 11, 11′, 14, 14′ which are located offset to each other in the and laterally to the traveling motion direction R and a control device which operates the spraying facilities using a method such that during a traveling motion of the vehicle a sprayed carpet T is produced with front and rear boundaries V, H which are continuous over the width of the sprayed carpet and which are parallel to a respective reference line L which is placed on the planum in front of the spraying facility which is the frontmost in traveling motion direction. The sprayed carpet T is produced such that each spraying facility 11, 11′, 14, 14′ first is activated or deactivated depending on the traveling motion with a predetermined distance from the or when reaching the respective reference line L.

Description

CROSS REFERENCE TO PRIOR APPLICATION [0001]This application claims priority from European Patent Application No. 06024536.2, filed Nov. 27, 2006, the disclosure of which is incorporated herein by reference in its entirety.FIELD OF THE INVENTION [0002]The invention relates to a road finisher and a method of operation, such finisher to produce a rectangular sprayed carpet of a bonding agent on a surface.BACKGROUND OF THE INVENTION [0003]The road finisher known from EP 0 484 236 A includes spraying facilities which are lateral bars distributed over the longitudinal extension of the road finisher. The spraying facilities are also offset laterally to the longitudinal axis of the road finisher, in order to e.g. produce three strip-shaped sprayed lanes which result behind the road finisher in a laterally continuous carpet. A first spraying bar is arranged in front of the undercarriage and sprays the planum between the travelling lanes of the undercarriage. Secondary spraying facilities are...

AI Technical Summary

Benefits of technology

[0008]Since according to the method each spraying facility first is activated depending on the travelling movement when it has a predetermined distance to or is reaching the reference line set beforehand, the front boundary as well as the rear boundary of the sprayed carpet will be straight and lineally and parallel to the reference line. In this way the front and rear carpet boundaries will substantially coincide with the front and rear boundary of the laid down layer, without wasting bonding agent or without unnecessary contamination of the planum. Of course, in practice, a certain overlap is made, i.e., the front and rear boundaries of the sprayed carpet will be situated a little in front of the front boundary and a little behind the rear boundary of the laid down layer, in order to prevent regions of the laid down cover layer from not bonding properly. Any manual work is eliminated which in most cases meant a wrong dosing of the bonding agent and an undesirable environmental load.

Problems solved by technology

Any manual work is eliminated which in most cases meant a wrong dosing of the bonding agent and an undesirable environmental load.

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